Paper-drier.



H. L. KUTTER.

PAPER. DRIER.

APPLICATION FILED AUGJS. 1914.

Patented Mar. 2, 1915.

4 SHEETS-SHEET 1.

Inventor 1 9% CU. 3 8L Attorney Witnsses:

H. L. KUTTER.

PAPER DRIER.

APPLICATION FILED AUG. 13, 1914.

Patented Mar. 2, 1915.

4 SHEETSSHEET 2.

C/U. az/

Attorney H. L. KUTTER.

PAPER DRIER.

APPLIOATION FILED AUG. 13, 1914.

Patented Mar. 2, 1915.

4 SHEETSSHEET 3.

Q/r'mom KuIIev.

Inventor Attorney H. L. KUTTER.

PAPER DRIER.

APPLICATION FILED AUG. 13, 1914.

1, 130, 17 9. Patented Mar. 2, 1915.

4 SHEETS-SHEET 4.

I Witnessgs: Inventor 61 l W (11,381

% Attorney UNITED STATES PATENT OFFICE.

HERMAN L. KUTTER, OF HAMILTON, OHIO, ASSIGNOR T0 BLACK-CLAWSON COMPANY, OF HAMILTON, OHIO.

' PAPER-DRIER.

Application filed August 13, 1914. Serial No. 856,571.

To all whom it may concern Be it known that I, HERMAN L. KUTTER, a citizen of the United States, residing at Hamilton, Butler county, Ohio, have invented certain new and useful Improvements in Paper-Briers, of which the following is a specification.

In the ordinary drying of the wet newly formed web in-paper mills the usual course is to'pass the web partially around a steam-v heated drying-cylinder and then partially around a second cylinder located in the same plane of the first cylinder, and so on partially around any desired number of cylinders arthis general ar angement of driers will show that the running paper forms roofs over the spaces between contiguous driers, and that the main bulk of the" vapor is driven off below these roofs and it can only get out into the drying-room through the tunnels, so to call them. formed by the spaces between contiguous driers and below the paper roofs above these spaces. Quite regardless of the very great width of web in which paper is now being made, it will at once be apprehended that the main part of the vapor thrown from the paper by the driers must move axially from'the driers and pass up around the edge of the paper. In the drying of paper by any of the present known methods wet edges have been a constant source of trouble, and the sidewise discharge of the great quantities of vapor has resulted in extraordinary condensation in the drying-room. The importance of this general matter will be apprehended when it is understood that in passing one hundred tons of wet paper over the driers sixty tons of water must be drawn out of the paper in the form of vapor. 1

Reference has been made to the fact that driers arranged in a horizontal series take Specification of Letters Patent.

up a great deal of space, giving extended area for the drying-room. It is quite common in modern paper mill construction to lessen the horizontal extent of area required for the driers by arranging several horizontal sets of driers, one above the other. This arrangement saves room but does not lessen.

in any degree whatever, the trouble above referred to, such as wet edges and the horizontal discharge of vapor into the dryingroom before it can possibly find an upward outlet, furthermore, this multiple deck system of driers, has the disadvantage of disposing the driest portions of the running web of the paper under the wetter running portions of the web so that there is always present the tendency for the driest portions of the web to absorb moisture expelled from the wetter portions.

In my improved system of driers I aim to avoid in a great degree, the presence of the horizontal tunnels through which the vapor must move axially of the driers, and to substitute therefor an arrangement of driers permitting the vapor to move mainly in vertical paths to an outlet at the top of the drying-room thus avoiding almost entirely the trouble due to wet edges and to horizontal discharge of vapor into the drying-room. My improved system also very greatly lessens the amount of horizontal area of the drying-room required as compared with any of the usual multiple decks.

My invention will be readily understood from the following description taken in connection vith the accompanying drawings in which:

Figure l is a side elevation of four colunr, nar sets of driers comprising, all together forty-eight drying-cylinders, the inclosing structure appearing in the plane of line b of Figs. 2 and 4:: Fig. 2, a plan of the device, the inclosing structure appearing in the plane of line a of Figs. 1 and 3: Fig. 3, a side elevation, similar to Fig. l, but showing the elevators attached: Fig. 4, a plan of the device, similar to Fig. 2, but showing the elevators attached: Fig. 5, a side elevation of the principal parts of one of the elevators: Fig. 6, a horizontal section of the elevator parts in the plane of line a of F igs. 3, 5 and 8: Fig. 7, a horizontal section of the elevator parts in the plane of line d of Figs. 3, 5 and 8; and Fig. 8, a diagram illustrating the arrangement of the main elevator parts.

Patented Mar. 2, 1915. Y

In the drawings, ignoring for the present all but Figs. 1 and 2: 1, indicates a skeleton frame-work for the support of the dryingcylinders: 2, a vertical series of dryingcylinders journaled in boxes supported by the frame-work: 3, a second vertical series of drying-cylinders supported by the framework as near as practicable to the first series of drying-cylinders: "t, a third vertical series or" drying-cylinders supported bv the frame-work somewhat in a vance of series 3: 5, a fourth vertical series of drying-cylinders disposed in advance and as near as practicable to series 1: 6, four vertical series of drying-cylinders disposed somewhat in advance of series constituting a duplication of the four series 2, 3, l and 5: 7, a web of paper to be dried, this web coming from the left to and up around the lowermost drier of series 3 and then around the lowermost drier of series 2 and so on in serpentine fashion to and up around and over the topmost drier of series 2 and then horizontally to and down series 4 and 5 in serpentine fashion, and then horizontally to and up and down, in serpentine fashion, the driers of group 6, then parting to the right from the base of the driers of group 6: 8, air-jet pipes disposed at the bases of the spaces between the two series 3 and l-of the driers the two corresponding series of driers in group 6: 9, an air-jet pipe disposed in the base between the drier series 5 and the contiguous driers of group 6: 10, the web of paper leaving the driers: 11, the vertical space between the driers of series 3 and series 4: 12, the vertical space between the drier series 5 and the contiguous drier series of group 6: 13, the vertical space in the center of drier group 6, corresponding with space 11: 1 1-, an inclosing structure surrounding the group of driers and having the top above the driers and adapted for the vertical discharge of vapor through the fully open top of the structure or otherwise: 15, doors to permit access to the inclosing structure: 16, typical gearing, of not unusual character, for transmitting rotary motion to the driers: and 17, top bracing for the side arrangement of the drier-frame.

Now, looking at Fig. 1, it. is to be observed that the wet paper, entering the drying-system at 7, serpentines up the two drier series 2 and 3 and then advances horizontally and serpentines down the two series 4 and 5 and then leaves horizontally. Notice that the running web of paper forms a roof extending from the topmost one of driers 2 to the topmost one of driers 5. The

vapor rising under this paper-roof may depart sidewise of the ,general system at any place or places in the space 11 extending from the floor to the paper-roof in question,

and the onlyliability to the wetting of the edge of the web will be incident to the sidewise departure of such vapor as has not gotten out of space 11 beforethe paper roof is reached. In the ordinaryarrangement of driers there would be thirteen of these paper roofs, none of themso extended as the general roof illustrated but all of them much closer to the field of sidewise departing vapor and therefore having much more tendency to produce wet edges. In the ordinary arrangement of driers the paper roots in question will necessarily be subjected to most all of the vapor driven ofl from the driers, while in the present case it is to be noted that the paper roof extending between series 2 and 5 is subjected to'the action of only that vapor which cannot depart sidewise from the very extended passage 11, and it is also to be noted that the vapor rising from the outside of the driers of series 2 and 5 is not under any paper roof at all and therefore does not tend to produce wet edges.

The inclosing structure 14: confines the va-,

per driven ofi' by the driers to the immediate neighborhood of the driers and avoids the evils due to the deposit of condensation in the general premises containing the driers. The vertical movement of the vapor in the passage 11, and in the vertical passages outside the driers, is facilitated by the upward jets from pipes 8 and 9, and the withdraw; ing of the vapor at the top of the system may be at an open outlet or be at any usual or suitable ventilating device.

Thus far reference has been made only to four series of driers 2, 3, 4 and 5. Provision is made for the employment of twenty-four driers, but the system may be extended vertically if desired, without taking up any more room than would be involved in the employment of four driers as ordinarily arranged, and without involving the trouble due to wet edges to much greater extent than would be involved in the employment of only two driers. The addition of twentyfour driers, represented by group \6, simply doubles the eiiect resulting from the four series 2, 3, it and 5 which has been considered.

To aid in assisting the machine-tender in threading the web through the driers, I provide an elevator for carrying him up and down the stacks of driers at the vertical speed of the paper. And by the vertical speed of the paperI do not mean the running speed of the paper but the vertical advance, it being understood that the paper, in

nfoving to and through the driersat a cer-- tainv speed, zigzags back and forth with a certain vertical advance forthe paper. The I vertical speed of the elevator, either ascending or decending, is therefore to be in accordance with the vertical advance of the paper and not in accordance with the lineal advance of the paper. This elevatormatter I will now explain in connection with Figs. 3 to 8, inclusive, of the drawings, Figs. 3 and 1 repeating Figs. 1 and 2 but adding the ele- J vator mechanism. 1 In connection witl1 this explanation the eyehad best'be centered on the diagrammatic illustration in Fig. 8,'t he other figures of the drawings being consldcred when necessary. 4

Continuin with the drawings: 18, indi rates a' fixed vertical column outside and near the drier-frame and constituting an elevator frame-part: 19, a sleeve sliding on this column and constituting an adjunct of the elevator-car: 20, a base carried by this sleeve to support the floor of the elevator-car. 21, the'floor of the elevator-car, this floor being illustrated in Figs. 3 and 4 as servin for the four stacks of driers, the four stac vs 2, 3, l and and also for the duplicating multiple stacks 6: 22, a shaft, illustrated as being disposed across the top of the first group of twenty-four driers, and intended to be urned in correspondence with the vertical lvance of the paper and give motion to the elevator: 23, a sprocket-gear on this shaft, near the column 18: 2%, an endless chain carried by the sprocket-gear 23 and by an idle sprocket-gear near the base of the column 18, this chain running at a constant speed near column 18 upwardly at the speed of the paper advance at one of its leaves and downwardly at the same speed at the other leaf of the-chain: 25, in Fig. 8, a diagrammatic rectangle intended to typify, taken with its accessories, the elevator-car as a whole: 26, a ratchet, with upwardly facing teeth, fixed to the column 18: 27, a saring-pawl carrird by the elevatorcar and having its toe normally in engagemcnt with ratchet 26; 28, a bolt, carried b the elevator-car and adapted to slide horizontally so that one of its ends may engage with or disengage from the upwardly running leaf of the elevator-chain: 29, a lever arried by the elevator-car and connected 'ith bolt 28 in such manner that the vibraion of the lever may move the bolt into and out of engagement with the elevator chain, this lever to be moved by hand by the machine-tender ridin on the elevator-car: 30, a horizontal hand e-rod by which the machine-tender may rock lever 29, the rod character of this feature of the devicepermitting of the levers of several elevators being moved by one handle: 31, a lu projccting from pawl 27 and adapted to be engaged by the tail end of bolt 28 to effect the withdrawal of pawl 27 when the bolt is withdrawn by the operation of lever 29: 32, a fixed stop carried by the drier-frame in the neighborhood of the top of the stacks of driers: 33, a ta pet-arm connected with lever 29 and adapte(,wl1en the elevator-car nearly reaches its desired extremity of upward travel, to engage stop 32 and bring about, in .i obvious manner, the withdrawal of bolt from the upward running leaf of the chain: 34, a horizontal shaft mounted on the car: 35, a spi'ocket gear mounted on the shaft and having teeth engaging the downwardly running leaf of the elevator-chain: 36, a ratchet-gear fast with the sprocket-gear 35: 3 7, a spring-pawl carried by the elevator-car and having its toe in engagement with the ratchet-gear 36; 38, a frusto-conical pulley on shaft 22 and serving merely to typify means which may be employed for regulating the speed of the elevator-shaft relative to the rotative speed of the driers: and 39, additional columns carried at the side of the drier-frame for the guidance of the elevator-car.

Looking at Figs. 3, 5 and 8, and assuming the elevator-car to be at the floor where it is supported by contact with anything, special provision or otherwise, and assuming that bolt 28 and pawl 27 are both to the left, the left-hand leaf of the chain running downwardly. Under these conditions the elevator-car is at rest; the chain is moving at the speed corresponding with the vertical advance of the paper; the left hand leaf of the chain turns sprocketcar 35 and ratchetgear 36 idly; pawl 37 clicks idly. The machine-tender, taking the pacer where it enters the driers at 7, proceeds to thread the paper throu h the vertical series 2 and 3 of the driers. Tn doing this he actuates, when the roper time comes, lever 29, thus throwing olt 28vinto the right-hand leaf of the chain and permitting pawl 27 to engage ratchet 26. The car now rises at the speed of the vertical advance of the paper, pawls 27 and 37 clicking idly. At any point in the ascent hema shift lever 29 to the left suilieiently to" withdraw bolt 28 from the right-hand leaf of the chain, whereupon the elevator-car comes to rest, being supported by pawl 27. He may proceed upwardly, when desired, by shifting lever 29 to the right to again en age bolt 28 with the uprunning leaf of tie chain. At the top of the trip the bolt will be automatically withdrawn from the up-running leaf of the chain by the engagement of the arm 33 with stop 32 if the tender has not manually shifted lever 29 in order to arrest the upward movemeat of the elevator-car or to reverse its direction of motion. While the elevator-car is at rest, or while its direction of motion is reversing, the attendant carries the paper over to the topmost drier of series 5 and proceeds to thread the paper downwardly in serpentine fashion on the driers of series 4 and 5. In doing this he will cause the elevator-car to descend which he does by shifting the lever 29 so far to the left that pawl 27 will be entirely free of columnratchet 26. The load of the elevator-car, and the attendant upon it will now be borne by such tooth of sprocket-gear 85 as engages the down-running leaf of the chain, pawl 87 preventing any reverse turning of this sprocket-gear, so that the engaging tooth of this sprocket-gear becomes, in effect, abolt carried by the elevator-car and engaging the down-running leaf of the chain so that the elevator-car may descend only at the running speed of the chain, which running speed corresponds with the vertical advance of the paper. The attendant may, whenever it be desired, arrest the motion of the elevator-ca as it descends by shifting lever .29 to the right sullicientlv to permit awl 27 to engage column-rate vet 26. Having carried the paper down to-tho foot of the series of driers *t he carries the paper forward horizontally at the base of the system and threads it up and down through the stacks 6 of driers, using the elevator in the same manner as has been before described.

Briefly, regarding the elevator, the attend ant, by manipulating lever 29, may put it in right-hand position to cause the up-running leaf of the chain to carry the car upwardly, or he may put the lever in neutral position to bring the car to rest, or he may put the lever in leftward position to permit the car to be supported by and moved downward with the down-running leaf of the chain. In case of two compound stacks of driers,

as indicated in the drawings he may perform these manipulations of lever 29 from the position at any of the stacks of dricrs, regardless of whether there be two or only one of the elcvator-chains-so long as the elevator is so arranged as to carry him over the desired routes necessary to thread the paper over the dricrs.

I claim 1. A paper drier comprising a vertical serics of closed rotary drying cylinders, a second vertical series of closed rotary drying cylinders disposed alongside the first series, the drying cylinders of the second series having their axes in horizontal planes lying 46 between the horizontal planes of the axes of the first series of drying cylinders, means for producing an upward current of vapor coming from drying paper running in scrpentine manner over drying cylinders of 50 the two series alternately, and an open outlet over said two series of driers to permit of the free discharge of the vapor rising therefrom, combined substantially as set forth.

a5 2. A paper drier comprising a vertical serics of closed rotary drying cylinders, a second vertical series of closed rotary drying cylinders disposed alongside the first series,

were

the drying cylinders of the second serie having their axes in horizontal planes lying between the horizontal planes of the axes of the first series of drying cylinders, means for producing an upward current of: vapor coming from drying paper running in serpentine manner over drying cylinders of the two'series alternately, and a structure inclosing said two series of drying cylinders and'adapted to confine said vapor horizontally and having its upper portion freely open to the atmosphere, combined substantially as set forth.

3. A paper drier comprising, a vertical se ries of rotary drying cylinders adapted for the reception ofa web of wet paper in serpentine fashion, a second vertical series of rotary drying cylinders arranged alongside the list series and adapted to receive the partially dried paper from the first series and carry the paper in serpentine fashion llL the opposite direction, combined substan tially as set forth.

4. A paper drier comprising, a vertical series of rotary drying cylinders adapted for the reception of a web of wet paper in serpentine fashion, an elevator car adapted to travel vertically at one end of said series of drying cylinders, means for moving said elevator car up and down at the speed of vertical advance of the paper, and controlling devices for arresting the motion of the elevator car and for determining its direction of motion, combined substantially as set forth.

5. A paper drier comprising, a vertical series of rotary drying cylinders adapted for the reception of a web of wetpaper in serpentine fashion, a second vertical series of drying cylinders disposed alongside the first series and adapted to receive the drying paper from the first series of drying cylinioa ders, an elevator car disposed at the end 0 said series of drying cylinders and having 1' platform adapted to support an attendant ll position to handle the web of paper on the" drying cylinders of either of said series, 10: means for moving said elevator car up and down at the speed of vertical advance of the paper, and controlling devices for arresting the motion of the elevator car and for determining its direction of motion, combined 11' substantially as set forth.

HERMAN L. KUTTER.

Witnesses:

' Gao. JonNsoN, M. S. BELDEN.

Copies of this patent may be obtained tor Ave cent: each, by addressing the Commissioner of Patents.

' Washingtoa,D.0." 

